GOST 529-78
INTERSTATE STANDARD
TUBE RADIATOR
SPECIFICATIONS
IPK PUBLISHING HOUSE OF STANDARDS
Moscow
INTERSTATE STANDARD
TUBE RADIATOR SpecificationsRadiator tubes. |
GOST Instead |
Edition (August 2002), amendment No. 1, approved in January 1983 (ICS 5−83)
The decision of the State standards Committee of the USSR Council of Ministers of 13 February 1978, No. 446 date of introduction set
01.01.79
Limitation of actions taken by Protocol No. 3−93 Interstate Council for standardization, Metrology and certification (ICS 5−6-93)
This standard applies to cold-formed tubes from alloy grade l96 for the manufacture of honeycomb radiators.
1. ASSORTMENT
1.1. Shape, wall thickness and tolerances for dimensions of round tubes shall be as specified in the hell. 1 and in table. 1.
Table 1 Dimensions, mm
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Damn. 1 |
At customer’s request, tubes with a diameter of 4 mm are made with maximum deviation of outer diameter is ±0.07 mm.
(Changed edition, Rev. No. 1).
1.2. Shape, wall thickness and tolerances for the dimensions of the hexagonal tubes shall be as specified in the hell. 2 and in table. 2.
| Damn. 2 | Table 2 Dimensions, mm
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1.3. Shape, wall thickness and tolerances for sizes polutrusy should match those in hell. 3 and in table. 3.
| Damn. 3 | Table 3 Dimensions, mm
|
Note to hell. 2 and 3. The dimensions R, h1 and r are reference. Density brand l96 is taken equal to 8,85 g/cm3.
1.4. Tube with wall thickness 0.15 and 0.20 mm are made dimensional and random length.
The length of the tubes should be from 150 to 500 mm, random — from 1250 to 4000 mm.
1.5. Tube with a wall thickness of 0.10 mm manufactured lengths.
Length round tubes — 256 mm, hex — 254 mm.
1.6. Maximum deviations along the length of the measuring tubes in millimeters should be:
Length, mm Limit deviation
From 150 to 250… ±0,4
SV. 250 to 500… ±0,5
Examples of symbols of the tubes
The legend shall appear on the diagram.
Abbreviations:
manufacturing method: cold-drawn — D;
sectional shape: round — CU;
hex — CG;
polukrovka — FRI;
condition: solid — T;
length: random length — ID.
Note. The sign «X» is placed in place of missing data
Tube cold-drawn round, firm, of an external diameter of 4 mm, a wall thickness of 0.20 mm, length 250 mm, made of brass brand l96:
Tube ДКРХТ4 x 0,20 x 250 l96 GOST 529−78
The same hex, hard, room 7, with a wall thickness of 0.15 mm, random length, brass brand l96:
Tube ДШГХТ7 x 0,15 x НДЛ96 GOST 529−78
The same polutrusy, solid, number 5, with a wall thickness of 0.20 mm, random length, brass brand l96:
Tube ДПТХТ5 x 0,20 x НДЛ96 GOST 529−78
(Changed edition, Rev. No. 1).
2. TECHNICAL REQUIREMENTS
2.1. Tubes manufactured in accordance with the requirements of this standard for technological regulations approved in the prescribed manner.
Pipe shall be manufactured from copper-zinc alloy grade l96 according to GOST 15527−70.
(New edition, Rev. No. 1).
2.2. Pipe shall be manufactured in the solid state.
2.3. The outer and inner surfaces of the tubes shall be clean and shall not have shells, shells, markings, a Crescent of streaks and bubbles.
Allowed individual surface defects, slivers, shell, the risks, if they are in control not the sweep output tube for maximum deviations in size.
The party allowed no more than 5% of the tubes with dents with a depth of not more than 0.25 mm.
Water stains on the exterior of the tubes be permitted.
2.4. The tube should be trimmed evenly and must not have burrs.
2.5. Deviation from the cross-sectional shape and raznoshennoy tubes shall not withdraw their sizes for maximum deviations accordingly, the outer dimensions and wall thickness.
2.6. Measuring curvature of tubes shall not exceed:
0.7 mm — for tubes up to 250 mm;
1.0 mm — for tubes with a length of over 250 to 450 mm;
1.5 mm — for tubes with a length of 450 mm. St
Random local curvature of tubes shall not exceed 5 mm per 1 m length.
The total curvature of random tubes shall not exceed the limit of the local curvature of 1 m at the length of tubing in meters.
At the request of the consumer, the local curvature of random tubes shall not exceed 3 mm per 1 m length.
(Changed edition, Rev. No. 1).
2.7. The tensile strength for round pipes with a diameter of 10 mm should be 48 — 58 kgf/mm2 (470,4 — 568,4 MPa) for pipes of other sizes 40 — 60 kgf/mm2 (392 — 588 MPa).
2.8. The tube must be sealed.
3. ACCEPTANCE RULES
3.1. Tube take parties. The party should consist of pipes of the same size and decorated the same document about quality that contains:
trademark or the name and trademark of manufacturer;
grade;
the size of the tubes;
the weight of the batch;
batch number;
the designation of this standard.
The mass of the party must be not more than 70 kg.
(Changed edition, Rev. No. 1).
3.2. Check outer surfaces subjected every tube party. Testing internal surface of the measuring tube is subjected to each tube. To check the inner surface of off-gage pipes select five tubes from the party.
3.3. To test for leaks and to check the mass of 1 m tube take 2 kg of the tubes from the party.
3.4. To control external dimensions and wall thickness are selected five tubes from the party.
3.5. To control the length and curvature take 1 kg of the tubes from the party.
3.6. The tensile strength of the material of the tubes to be checked periodically at least twice per year in the two tubes from the party.
3.7. Chemical analysis carried out on two tubes from the party. On the manufacturer’s chemical analysis may be performed on the samples taken from the molten metal.
3.8. If unsatisfactory test results of at least one indicator thereon, a second test of the doubled sample taken from the same batch.
The results of repeated tests apply to the entire party.
4. TEST METHODS
4.1. The surface quality of the pipes checked by inspection without the use of magnifying devices.
The inspection of the inner surface of the tubes must be made by viewing them on a light box.
The inspection of the inner surface of off-gage pipes is carried out on segments with a length of 250 mm.
To check the depth of defects allowed the control sweep surface of the tubes with sandpaper grain size of not more than No. 5.
4.2. Control the outside dimensions and wall thickness are produced using a micrometer according to GOST 6507−90.
To control the wall thickness of each of the selected tubes, cut samples of length 150 mm and cut them lengthwise.
4.3. The length and curvature of the measuring tube control bracket and the template with the error not more than 0.05 mm.
4.4. The length of the random tubes are measured with a metal ruler according to GOST 427−75 or measuring tape according to GOST 7502−98.
4.5. Curvature of random tubes is controlled in the following way. The tube is placed on a horizontal plane, and attach a straightedge with a length of 1 m according to GOST 8026−92 and with a feeler gauge at the ND measure the maximum distance between the line and the tube.
4.6. Allowed to control the size of the tubes as another tool to ensure the appropriate measurement accuracy.
4.7. The tensile test is carried out according to GOST 10006−80 on long samples.
Of each controlled tube cut off one sample. The selection and preparation of samples is carried out according to GOST 24047−80.
(Changed edition, Rev. No. 1).
4.8. The tubes must withstand the leakproofness test with air pressure of not less than 7 kgf/cm2 (0,686 MPa) aged at this pressure for at least 5 s.
Test pipes for leaks is carried out with compressed air in the tub filled with water.
Tube, the surface of which appeared air bubbles are considered to be unseasoned test.
4.9. The chemical composition of the material of the tubes is determined according to GOST 1652.1−77 — GOST 1652.13−77.
Of each controlled tube cut off one sample.
The selection and preparation of samples is carried out according to GOST 24231−80.
(Changed edition, Rev. No. 1).
5. PACKING, MARKING, TRANSPORTATION AND STORAGE
5.1. Tubes must be Packed in solid wooden boxes of types I and II according to GOST 2991−85 that the inside should be lined with wrapping paper GOST 8828−89.
Consolidation packages in overpacks shall be in accordance with carriage rules, approved by the relevant departments.
5.2. Transport marking of packages — according to GOST 14192−96 with application of additional lot number.
5.1; 5.2 (Revised edition, Edit. No. 1).
5.3. (Deleted, Rev. No. 1).
5.4. Tube transporterowych by all kinds of transport in covered vehicles in accordance with the rules of cargo transportation applicable to transportation of this species.
(Changed edition, Rev. No. 1).
5.5. Tubes should be stored in closed premises in conditions excluding mechanical damage of the pipes to keep moisture and the action of active chemical substances.
